A loaded firearm is not the main issue, as many Americans including me (and many others i'm sure) have plenty of loaded fireams in their homes for SD/HD.

it was irresponsibility and negligence that led to the tragedy, and each gun owner needs to be aware of the responsibility we all carry when possesing firearms. But I agree with what was posted before that kitchen knifes, cars, and even matches are deadly weapons although they are not designed that way.